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auxillary heat - that's what keeps you warm when it's coldest outside. You're fine - don't need to find a place to stay. It gets to -25 here and you can go a whole day without heat - it'll drop house...

Upgraded to a Testo 560-1 4 manifold unit last summer - lasted about a month before problems. There's a pressure relief built into front that started leaking. Returned unit under warranty. Testo gave...